Apparatus for combining an



(No Model.) I

J. S. AMMON.

APPARATUS FOR COMBINING ANESTHETIGS.

No. 895,683, Patented Jan. 8, 1889.

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UNITED STATES PATENT Fries.

JACOB S. AMMON, OF READING, PENNSYLVANIA.

APPARATUS FOR COM BIN l NG AN/ESTl-i ETICS.

SPECIFICATION forming part of Letters Patent No. 395,683, dated January 8, 1889.

Application filed September 12, 1888. erial No. 285,220. (No model.)

To all whom it may concern:

Be it known that I, ACOB S. AMMON, a citizen of the United States, residing at Reading, in the county of Berks and State of Pennsylvania, have invented certain new and use ful Improvements in Apparatus for Combining Anresthetics; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanyingdrawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

The object of this invention is to provide an apparatus in which anaesthetic agents may be convenicn tly stored and when wanted readily applied to the patient, combined in varying proportions, if desired, and properly aerated without the loss and inconvenience occasioned by allowing the vapor to be distributed to a greater or less extent throughout the room.

Figure 1 is a longitudinal section of the anaesthetic-ch21mber and its inclosing and supporting case. Fig. 2 is an end view and partial cross-section of the same, the hinged lid of the case being open and the position of the chamber when oscillated being indicated by dotted lines.

A represents a st uare-cornered wooden box or case provided with a hinged cover, A.

B is a closed semi-cylindrical sheet-metal chamber divided, as here shown, into two compartments by a partition, B A nozzle, C, with internal screw-thread, G, by means of which the inhaler may be attached, projects from the front wall of the first compartment, its center coinciding with the center of the curved bottom of the chamber. A corresponding trunnion-piece, B projects from the back wall, and on these the chamber is pivotally supported in the case A, though held firmly when the cover A is closed.

The nozzle C, which serves also as a front trunnion, extends into the first compartment, and is attached to or forms part of an outlet tube, 0 which is bent downward, so that its mouth will be near the level of the fluid anaesthetic agent placed in the compartment. In this outlet-tube is placed a faucet or other suitable cock, E, which projects through the top of the chamber, and is provided with a handle, E, or other suitable means of turning it, so as to close or open the outlet to any desired extent.

A screw-plug, F, closes an inlet-opening in the top of the compartment, through which the fluid agent and the air required by the patient with the vapor is admitted.

Vertical open partitions G (represented as formed of parallel wires soldered or otherwise secured in position) serve the purpose of retaining an absorbent material, Hsuch as sponge-close against the sides and top of the compartment, where in the normal position of the chamber the fluid will either not touch it at all or only touch the lower part of it.

The second compartment and any others that may be used are provided with inlet and outlet openings and tubes, regulating-cocks, and an absorbent material in the same manner as the first compartment, above described, the only difference being that the nozzle 0 of the outlet-tubes of the rear compartments will extend through the partition or partitions into the first compartment, as shown in Fig. 1, the mixing or combining of the several vapors with each other being effected entirely in this compartment.

\Vhen the case is closed and locked, the apparatus may be easily and safely carried around with the liquid anzesthetic agents in the several compartments, the chamber 13 being held firm. Then it is desired to anaesthetize a patient, an inhaler is attached, the cover of the case is opened wide, and the chamber is oscillated, so as to bring the several fluids in contact alternately with the materials H on either side, which latter are thus saturated. hen the chamber is brought to rest, the surplus fluid drops to the bottom. Supposing the first compartment to contain ether and the second chloroform, if it is de sired to apply the former only, the cock E and plug F of the second compartment are left closed, while those in the first compartment are each opened as far as desired. The air admitted is compelled to enter the outlettube 0 near the bottom of the compartment and the level of the fluid, and on its passage is brought in contact and mixed with the Vapor thrown off from the saturated surface of the absorbent material, as well as from the surface of the fluid, and the ether-vapor thus aerated is inhaled by the patient. If it is found desirable to combine with the other a portion of the chloroform, the corresponding plug and cock of the second compartment may be opened a proper distance and the aerated chlorofor1nvapor be admitted to the first compartment through the nozzle (1 As soon as a sufficient amount of the latter has been used, it may be entirely closed off. If other compartments and agents are used,the method of combining is the same. Owing to the fact that these vapors are heavier than air there will be no appreciable waste, even if both the outlet and inlet openings are left open when not in actual use; but it is preferable to close the nozzle 0 with a plug or cap, D, at such times.

The advantages of having these important but more or less dangerous agents fully un-' der control, and of avoiding waste and annoyance to the operator, secured by my apparatus, as compared with the ordinary means employed, will be easily understood.

The preferred construction herein described may be readily varied without departing from the spirit of my invention; and I do not therefore limit myself closely to such a construction; but

level, and an absorbent material, H, adapted to be wet by the oscillation of said chamber, substantially as set forth.

3. In an apparatus for combining anaesthetics, an oscillating chamber divided into two or more compartments, each of which is provided with inlet and outlet openings, and outlet-tubes with regulating-cocks converging from near the fluid-level of each compartment toward the mixing-compartment and from said mixi ng-compartment to an inhalernozzle, substantially as set forth.

at. I11 an apparatus for vaporizing or combinin g anzesthetics, an oscillating semi-cylin d rical chamber, B, provided with inlet and outlet openin and with an absorbent material, 11, normally retained above the fluid-level, substantially as described, in combination with an inclosing and support-in g case, A, substantially as set forth.

5. In an apparatus for combining antesthctics, the chamber B, divided into two or more compartments, each of which is provided with inlet and outlet openings, and outlet-tubes converging toward the first or mixing compartment, substantially as set forth.

(3. In an apparatus for combining anaesthetics, the oscillating chamber B, divided into t v0 or more compartments, each of which is divided into inlet and outlet openings, and outlet-tubes converging toward the first or mixing compartment, each compartment containing an absorbent material, H, arranged substantially as set forth.

In testimony whereof I afiix my signature in presence of two witnesses.

JACOB S. AMMON. Vi tn esses:

W. G. STEWART, C. J. DWIGHT. 

